Specifications
| Category | Specification | Details |
| General | Brand | Pro'sKit |
| Model Number | MT-4109-C | |
| Type | Hand-held RCD/LOOP Tester | |
| Origin | Taiwan | |
| Testing Capability | Test Voltage Range | 0V – 440V (AC Phase Voltage) |
| Loop Resistance (RL) | 0.1$\Omega$ ~ 2000$\Omega$ | |
| Frequency Range | DC, 45Hz – 65Hz | |
| RCD Trip Current ($I_{\Delta N}$) | 10, 30, 100, 300, 500mA | |
| Current Magnification | $\times$0.5, $\times$1, $\times$5 | |
| Accuracy & Resolution | Trip Time Accuracy | $\pm$3ms (Resolution: 0.1ms) |
| Voltage Accuracy | $\pm(3\% + 3d)$ | |
| Loop Resistance Res. | 0.1$\Omega$ / 1$\Omega$ | |
| Features | Display | 4-Digit LCD with Backlight |
| Data Management | 1,000 data records storable (USB 2.0 interface) | |
| Safety Standard | IEC61010-1 (600V CAT IV, Pollution Class 2) | |
| Additional Functions | Contact Voltage ($U_c$) Measurement, Phase Angle (0° or 180°) | |
| Physical | Dimensions | 188 x 145 x 73 mm |
| Single Gross Weight | 2.300 kg (Full kit) | |
| Power Supply | 8 x 1.5V AA (LR6) Batteries | |
| Warranty | 1 Year |